An important predator in rocky shores and kelp forest communities that can influence the abundance of other animals.

MARINe: Map of Sites

Figure Ux.Rocky.MARINe.map. Interactive map of the Channel Islands showing field sites where data were collected.

Click for Details These sites are where a consortium of contributors collected rocky intertidal data as part of the Multi-Agency Rocky Intertidal Network (MARINe).

MARINe: Ochre Seastar (Pisaster ochraceus)

Figure Ux.Rocky.MARINe.Ochre-Stars. The average number of ochre stars counted each year during 30-minute searches at monitoring sites at each of the five islands in Channel Islands National Marine Sanctuary by the Multi-Agency Rocky Intertidal Network (MARINe).

Click for Details These data were collected by a consortium of contributors as part of the Multi-Agency Rocky Intertidal Network (MARINe).

NPS: Sanctuary

More information about Channel Islands National Park can be found here

CINP data can be requested here

Figure App.F.12.2. A figure showing how the size of ochre stars differs across across several of the Channel Islands.

Figure App.F.12.2. A figure showing how the size of ochre stars differs across across several of the Channel Islands.

Click for Details Box plots for annual size frequency distributions of ochre star P. ochraceus at each island. Black lines represent mean sizes of ochre stars at each island pooled across sites. Red lines represent the mean of all years. Note that data for 2014 are not presented due to insufficient numbers of ochre stars encountered to estimate population size frequency. Figure: Channel Islands National Park